1/* 2 * System-dependent procedures for pppd under Solaris 2. 3 * 4 * Parts re-written by Adi Masputra <adi.masputra@sun.com>, based on 5 * the original sys-svr4.c 6 * 7 * Copyright (c) 2000 by Sun Microsystems, Inc. 8 * All rights reserved. 9 * 10 * Permission to use, copy, modify, and distribute this software and its 11 * documentation is hereby granted, provided that the above copyright 12 * notice appears in all copies. 13 * 14 * SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF 15 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 16 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 17 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR 18 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR 19 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES 20 * 21 * Copyright (c) 1994 The Australian National University. 22 * All rights reserved. 23 * 24 * Permission to use, copy, modify, and distribute this software and its 25 * documentation is hereby granted, provided that the above copyright 26 * notice appears in all copies. This software is provided without any 27 * warranty, express or implied. The Australian National University 28 * makes no representations about the suitability of this software for 29 * any purpose. 30 * 31 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY 32 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES 33 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF 34 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 * 37 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, 38 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 39 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS 40 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO 41 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 42 * OR MODIFICATIONS. 43 */ 44 45#define RCSID "$Id$" 46 47#include <limits.h> 48#include <stdio.h> 49#include <stddef.h> 50#include <stdlib.h> 51#include <ctype.h> 52#include <errno.h> 53#include <fcntl.h> 54#include <unistd.h> 55#include <termios.h> 56#ifndef CRTSCTS 57#include <sys/termiox.h> 58#endif 59#include <signal.h> 60#include <utmpx.h> 61#include <sys/types.h> 62#include <sys/ioccom.h> 63#include <sys/stream.h> 64#include <sys/stropts.h> 65#include <sys/socket.h> 66#include <sys/sockio.h> 67#include <sys/sysmacros.h> 68#include <sys/systeminfo.h> 69#include <sys/dlpi.h> 70#include <sys/stat.h> 71#include <sys/mkdev.h> 72#include <net/if.h> 73#include <net/if_arp.h> 74#include <net/route.h> 75#include <net/ppp_defs.h> 76#include <net/pppio.h> 77#include <netinet/in.h> 78#ifdef SOL2 79#include <sys/tihdr.h> 80#include <sys/tiuser.h> 81#include <inet/common.h> 82#include <inet/mib2.h> 83#include <sys/ethernet.h> 84#endif 85 86#include "pppd.h" 87#include "fsm.h" 88#include "lcp.h" 89#include "ipcp.h" 90#include "ccp.h" 91 92#if !defined(PPP_DRV_NAME) 93#define PPP_DRV_NAME "ppp" 94#endif /* !defined(PPP_DRV_NAME) */ 95 96#if !defined(PPP_DEV_NAME) 97#define PPP_DEV_NAME "/dev/" PPP_DRV_NAME 98#endif /* !defined(PPP_DEV_NAME) */ 99 100#if !defined(AHDLC_MOD_NAME) 101#define AHDLC_MOD_NAME "ppp_ahdl" 102#endif /* !defined(AHDLC_MOD_NAME) */ 103 104#if !defined(COMP_MOD_NAME) 105#define COMP_MOD_NAME "ppp_comp" 106#endif /* !defined(COMP_MOD_NAME) */ 107 108#if !defined(IP_DEV_NAME) 109#define IP_DEV_NAME "/dev/ip" 110#endif /* !defined(IP_DEV_NAME) */ 111 112#if !defined(IP_MOD_NAME) 113#define IP_MOD_NAME "ip" 114#endif /* !defined(IP_MOD_NAME) */ 115 116#if !defined(UDP_DEV_NAME) && defined(SOL2) 117#define UDP_DEV_NAME "/dev/udp" 118#endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */ 119 120#if !defined(UDP6_DEV_NAME) && defined(SOL2) 121#define UDP6_DEV_NAME "/dev/udp6" 122#endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */ 123 124static const char rcsid[] = RCSID; 125 126#if defined(SOL2) 127/* 128 * "/dev/udp" is used as a multiplexor to PLINK the interface stream 129 * under. It is used in place of "/dev/ip" since STREAMS will not let 130 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the 131 * driver at the bottom of the tunneling interfaces stream. 132 */ 133static char *mux_dev_name = UDP_DEV_NAME; 134#else 135static char *mux_dev_name = IP_DEV_NAME; 136#endif 137static int pppfd; 138static int fdmuxid = -1; 139static int ipfd; 140static int ipmuxid = -1; 141 142#if defined(INET6) && defined(SOL2) 143static int ip6fd; /* IP file descriptor */ 144static int ip6muxid = -1; /* Multiplexer file descriptor */ 145static int if6_is_up = 0; /* IPv6 interface has been marked up */ 146 147#define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \ 148 s->sin6_addr.s6_addr32[0] = htonl(as); \ 149 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \ 150 s->sin6_family = AF_INET6; \ 151 l.lifr_addr.ss_family = AF_INET6; \ 152 l.lifr_addrlen = 10; \ 153 l.lifr_addr = laddr; \ 154 } while (0) 155 156#define IN6_LLADDR_FROM_EUI64(l, s, eui64) \ 157 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000) 158 159#define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \ 160 _IN6_LLX_FROM_EUI64(l, s, eui64, 0) 161 162#endif /* defined(INET6) && defined(SOL2) */ 163 164#if defined(INET6) && defined(SOL2) 165static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */ 166#else 167static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */ 168#define MAXIFS 256 /* Max # of interfaces */ 169#endif /* defined(INET6) && defined(SOL2) */ 170 171static int restore_term; 172static struct termios inittermios; 173#ifndef CRTSCTS 174static struct termiox inittermiox; 175static int termiox_ok; 176#endif 177static struct winsize wsinfo; /* Initial window size info */ 178static pid_t tty_sid; /* original session ID for terminal */ 179 180extern u_char inpacket_buf[]; /* borrowed from main.c */ 181 182#define MAX_POLLFDS 32 183static struct pollfd pollfds[MAX_POLLFDS]; 184static int n_pollfds; 185 186static int link_mtu, link_mru; 187 188#define NMODULES 32 189static int tty_nmodules; 190static char tty_modules[NMODULES][FMNAMESZ+1]; 191static int tty_npushed; 192 193static int if_is_up; /* Interface has been marked up */ 194static u_int32_t remote_addr; /* IP address of peer */ 195static u_int32_t default_route_gateway; /* Gateway for default route added */ 196static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */ 197 198/* Prototypes for procedures local to this file. */ 199static int translate_speed __P((int)); 200static int baud_rate_of __P((int)); 201static int get_ether_addr __P((u_int32_t, struct sockaddr *)); 202static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *)); 203static int get_hw_addr_dlpi __P((char *, struct sockaddr *)); 204static int dlpi_attach __P((int, int)); 205static int dlpi_info_req __P((int)); 206static int dlpi_get_reply __P((int, union DL_primitives *, int, int)); 207static int strioctl __P((int, int, void *, int, int)); 208 209#ifdef SOL2 210/* 211 * sifppa - Sets interface ppa 212 * 213 * without setting the ppa, ip module will return EINVAL upon setting the 214 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects 215 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before 216 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to 217 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving 218 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa 219 * is required because the ppp DLPI provider advertises itself as 220 * a DLPI style 2 type, which requires a point of attachment to be 221 * specified. The only way the user can specify a point of attachment 222 * is via SIOCSLIFNAME or IF_UNITSEL. 223 * 224 * Such changes in the behavior of ip module was made to meet new or 225 * evolving standards requirements. 226 * 227 */ 228static int 229sifppa(fd, ppa) 230 int fd; 231 int ppa; 232{ 233 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa); 234} 235#endif /* SOL2 */ 236 237#if defined(SOL2) && defined(INET6) 238/* 239 * get_first_ethernet - returns the first Ethernet interface name found in 240 * the system, or NULL if none is found 241 * 242 * NOTE: This is the lifreq version (Solaris 8 and above) 243 */ 244char * 245get_first_ethernet() 246{ 247 struct lifnum lifn; 248 struct lifconf lifc; 249 struct lifreq *plifreq; 250 struct lifreq lifr; 251 int fd, num_ifs, i, found; 252 uint_t fl, req_size; 253 char *req; 254 255 fd = socket(AF_INET, SOCK_DGRAM, 0); 256 if (fd < 0) { 257 return 0; 258 } 259 260 /* 261 * Find out how many interfaces are running 262 */ 263 lifn.lifn_family = AF_UNSPEC; 264 lifn.lifn_flags = LIFC_NOXMIT; 265 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) { 266 close(fd); 267 error("could not determine number of interfaces: %m"); 268 return 0; 269 } 270 271 num_ifs = lifn.lifn_count; 272 req_size = num_ifs * sizeof(struct lifreq); 273 req = malloc(req_size); 274 if (req == NULL) { 275 close(fd); 276 error("out of memory"); 277 return 0; 278 } 279 280 /* 281 * Get interface configuration info for all interfaces 282 */ 283 lifc.lifc_family = AF_UNSPEC; 284 lifc.lifc_flags = LIFC_NOXMIT; 285 lifc.lifc_len = req_size; 286 lifc.lifc_buf = req; 287 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) { 288 close(fd); 289 free(req); 290 error("SIOCGLIFCONF: %m"); 291 return 0; 292 } 293 294 /* 295 * And traverse each interface to look specifically for the first 296 * occurence of an Ethernet interface which has been marked up 297 */ 298 plifreq = lifc.lifc_req; 299 found = 0; 300 for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) { 301 302 if (strchr(plifreq->lifr_name, ':') != NULL) 303 continue; 304 305 memset(&lifr, 0, sizeof(lifr)); 306 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name)); 307 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { 308 close(fd); 309 free(req); 310 error("SIOCGLIFFLAGS: %m"); 311 return 0; 312 } 313 fl = lifr.lifr_flags; 314 315 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) 316 != (IFF_UP | IFF_BROADCAST)) 317 continue; 318 319 found = 1; 320 break; 321 } 322 free(req); 323 close(fd); 324 325 if (found) { 326 strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name)); 327 return (char *)first_ether_name; 328 } else 329 return NULL; 330} 331#else 332/* 333 * get_first_ethernet - returns the first Ethernet interface name found in 334 * the system, or NULL if none is found 335 * 336 * NOTE: This is the ifreq version (before Solaris 8). 337 */ 338char * 339get_first_ethernet() 340{ 341 struct ifconf ifc; 342 struct ifreq *pifreq; 343 struct ifreq ifr; 344 int fd, num_ifs, i, found; 345 uint_t fl, req_size; 346 char *req; 347 348 fd = socket(AF_INET, SOCK_DGRAM, 0); 349 if (fd < 0) { 350 return 0; 351 } 352 353 /* 354 * Find out how many interfaces are running 355 */ 356 if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) { 357 num_ifs = MAXIFS; 358 } 359 360 req_size = num_ifs * sizeof(struct ifreq); 361 req = malloc(req_size); 362 if (req == NULL) { 363 close(fd); 364 error("out of memory"); 365 return 0; 366 } 367 368 /* 369 * Get interface configuration info for all interfaces 370 */ 371 ifc.ifc_len = req_size; 372 ifc.ifc_buf = req; 373 if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) { 374 close(fd); 375 free(req); 376 error("SIOCGIFCONF: %m"); 377 return 0; 378 } 379 380 /* 381 * And traverse each interface to look specifically for the first 382 * occurence of an Ethernet interface which has been marked up 383 */ 384 pifreq = ifc.ifc_req; 385 found = 0; 386 for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) { 387 388 if (strchr(pifreq->ifr_name, ':') != NULL) 389 continue; 390 391 memset(&ifr, 0, sizeof(ifr)); 392 strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name)); 393 if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) { 394 close(fd); 395 free(req); 396 error("SIOCGIFFLAGS: %m"); 397 return 0; 398 } 399 fl = ifr.ifr_flags; 400 401 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) 402 != (IFF_UP | IFF_BROADCAST)) 403 continue; 404 405 found = 1; 406 break; 407 } 408 free(req); 409 close(fd); 410 411 if (found) { 412 strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name)); 413 return (char *)first_ether_name; 414 } else 415 return NULL; 416} 417#endif /* defined(SOL2) && defined(INET6) */ 418 419#if defined(SOL2) 420/* 421 * get_if_hwaddr - get the hardware address for the specified 422 * network interface device. 423 */ 424int 425get_if_hwaddr(u_char *addr, char *if_name) 426{ 427 struct sockaddr s_eth_addr; 428 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data; 429 430 if (if_name == NULL) 431 return -1; 432 433 /* 434 * Send DL_INFO_REQ to the driver to solicit its MAC address 435 */ 436 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) { 437 error("could not obtain hardware address for %s", if_name); 438 return -1; 439 } 440 441 memcpy(addr, eth_addr->ether_addr_octet, 6); 442 return 1; 443} 444#endif /* SOL2 */ 445 446#if defined(SOL2) && defined(INET6) 447/* 448 * slifname - Sets interface ppa and flags 449 * 450 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must 451 * be set in order to declare this as an IPv6 interface 452 */ 453static int 454slifname(fd, ppa) 455 int fd; 456 int ppa; 457{ 458 struct lifreq lifr; 459 int ret; 460 461 memset(&lifr, 0, sizeof(lifr)); 462 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr); 463 if (ret < 0) 464 goto slifname_done; 465 466 lifr.lifr_flags |= IFF_IPV6; 467 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4); 468 lifr.lifr_ppa = ppa; 469 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 470 471 ret = ioctl(fd, SIOCSLIFNAME, &lifr); 472 473slifname_done: 474 return ret; 475 476 477} 478 479 480/* 481 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI 482 * 483 * walks the list of valid ethernet interfaces, and convert the first 484 * found 48-bit MAC address into EUI 64. caller also assumes that 485 * the system has a properly configured Ethernet interface for this 486 * function to return non-zero. 487 */ 488int 489ether_to_eui64(eui64_t *p_eui64) 490{ 491 struct sockaddr s_eth_addr; 492 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data; 493 char *if_name; 494 495 if ((if_name = get_first_ethernet()) == NULL) { 496 error("no persistent id can be found"); 497 return 0; 498 } 499 500 /* 501 * Send DL_INFO_REQ to the driver to solicit its MAC address 502 */ 503 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) { 504 error("could not obtain hardware address for %s", if_name); 505 return 0; 506 } 507 508 /* 509 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1] 510 */ 511 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02; 512 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF); 513 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF); 514 p_eui64->e8[3] = 0xFF; 515 p_eui64->e8[4] = 0xFE; 516 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF); 517 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF); 518 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF); 519 520 return 1; 521} 522#endif /* defined(SOL2) && defined(INET6) */ 523 524/* 525 * sys_init - System-dependent initialization. 526 */ 527void 528sys_init() 529{ 530 int ifd, x; 531 struct ifreq ifr; 532#if defined(INET6) && defined(SOL2) 533 int i6fd; 534 struct lifreq lifr; 535#endif /* defined(INET6) && defined(SOL2) */ 536#if !defined(SOL2) 537 struct { 538 union DL_primitives prim; 539 char space[64]; 540 } reply; 541#endif /* !defined(SOL2) */ 542 543 ipfd = open(mux_dev_name, O_RDWR, 0); 544 if (ipfd < 0) 545 fatal("Couldn't open IP device: %m"); 546 547#if defined(INET6) && defined(SOL2) 548 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0); 549 if (ip6fd < 0) 550 fatal("Couldn't open IP device (2): %m"); 551#endif /* defined(INET6) && defined(SOL2) */ 552 553 if (default_device && !notty) 554 tty_sid = getsid((pid_t)0); 555 556 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0); 557 if (pppfd < 0) 558 fatal("Can't open %s: %m", PPP_DEV_NAME); 559 if (kdebugflag & 1) { 560 x = PPPDBG_LOG + PPPDBG_DRIVER; 561 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0); 562 } 563 564 /* Assign a new PPA and get its unit number. */ 565 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) 566 fatal("Can't create new PPP interface: %m"); 567 568#if defined(SOL2) 569 /* 570 * Since sys_init() is called prior to ifname being set in main(), 571 * we need to get the ifname now, otherwise slifname(), and others, 572 * will fail, or maybe, I should move them to a later point ? 573 * <adi.masputra@sun.com> 574 */ 575 sprintf(ifname, PPP_DRV_NAME "%d", ifunit); 576#endif /* defined(SOL2) */ 577 /* 578 * Open the ppp device again and link it under the ip multiplexor. 579 * IP will assign a unit number which hopefully is the same as ifunit. 580 * I don't know any way to be certain they will be the same. :-( 581 */ 582 ifd = open(PPP_DEV_NAME, O_RDWR, 0); 583 if (ifd < 0) 584 fatal("Can't open %s (2): %m", PPP_DEV_NAME); 585 if (kdebugflag & 1) { 586 x = PPPDBG_LOG + PPPDBG_DRIVER; 587 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0); 588 } 589 590#if defined(INET6) && defined(SOL2) 591 i6fd = open(PPP_DEV_NAME, O_RDWR, 0); 592 if (i6fd < 0) { 593 close(ifd); 594 fatal("Can't open %s (3): %m", PPP_DEV_NAME); 595 } 596 if (kdebugflag & 1) { 597 x = PPPDBG_LOG + PPPDBG_DRIVER; 598 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0); 599 } 600#endif /* defined(INET6) && defined(SOL2) */ 601 602#if defined(SOL2) 603 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) { 604 close(ifd); 605#if defined(INET6) 606 close(i6fd); 607#endif /* defined(INET6) */ 608 fatal("Can't push IP module: %m"); 609 } 610 611 /* 612 * Assign ppa according to the unit number returned by ppp device 613 * after plumbing is completed above. 614 */ 615 if (sifppa(ifd, ifunit) < 0) { 616 close (ifd); 617#if defined(INET6) 618 close(i6fd); 619#endif /* defined(INET6) */ 620 fatal("Can't set ppa for unit %d: %m", ifunit); 621 } 622 623#if defined(INET6) 624 /* 625 * An IPv6 interface is created anyway, even when the user does not 626 * explicitly enable it. Note that the interface will be marked 627 * IPv6 during slifname(). 628 */ 629 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) { 630 close(ifd); 631 close(i6fd); 632 fatal("Can't push IP module (2): %m"); 633 } 634 635 /* 636 * Assign ppa according to the unit number returned by ppp device 637 * after plumbing is completed above. In addition, mark the interface 638 * as an IPv6 interface. 639 */ 640 if (slifname(i6fd, ifunit) < 0) { 641 close(ifd); 642 close(i6fd); 643 fatal("Can't set ifname for unit %d: %m", ifunit); 644 } 645#endif /* defined(INET6) */ 646 647 ipmuxid = ioctl(ipfd, I_PLINK, ifd); 648 close(ifd); 649 if (ipmuxid < 0) { 650#if defined(INET6) 651 close(i6fd); 652#endif /* defined(INET6) */ 653 fatal("Can't I_PLINK PPP device to IP: %m"); 654 } 655 656 memset(&ifr, 0, sizeof(ifr)); 657 sprintf(ifr.ifr_name, "%s", ifname); 658 ifr.ifr_ip_muxid = ipmuxid; 659 660 /* 661 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists. 662 * This is so that an arbitrary module can be inserted, or deleted, 663 * between ip module and the device driver without tearing down the 664 * existing stream. Such feature requires the mux ids, which is set 665 * by SIOCSIFMUXID (or SIOCLSIFMUXID). 666 */ 667 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) { 668 ioctl(ipfd, I_PUNLINK, ipmuxid); 669#if defined(INET6) 670 close(i6fd); 671#endif /* defined(INET6) */ 672 fatal("SIOCSIFMUXID: %m"); 673 } 674 675#else /* else if !defined(SOL2) */ 676 677 if (dlpi_attach(ifd, ifunit) < 0 || 678 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) { 679 close(ifd); 680 fatal("Can't attach to ppp%d: %m", ifunit); 681 } 682 683 ipmuxid = ioctl(ipfd, I_LINK, ifd); 684 close(ifd); 685 if (ipmuxid < 0) 686 fatal("Can't link PPP device to IP: %m"); 687#endif /* defined(SOL2) */ 688 689#if defined(INET6) && defined(SOL2) 690 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd); 691 close(i6fd); 692 if (ip6muxid < 0) { 693 ioctl(ipfd, I_PUNLINK, ipmuxid); 694 fatal("Can't I_PLINK PPP device to IP (2): %m"); 695 } 696 697 memset(&lifr, 0, sizeof(lifr)); 698 sprintf(lifr.lifr_name, "%s", ifname); 699 lifr.lifr_ip_muxid = ip6muxid; 700 701 /* 702 * Let IP know of the mux id [see comment for SIOCSIFMUXID above] 703 */ 704 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) { 705 ioctl(ipfd, I_PUNLINK, ipmuxid); 706 ioctl(ip6fd, I_PUNLINK, ip6muxid); 707 fatal("Can't link PPP device to IP (2): %m"); 708 } 709#endif /* defined(INET6) && defined(SOL2) */ 710 711#if !defined(SOL2) 712 /* Set the interface name for the link. */ 713 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), PPP_DRV_NAME "%d", ifunit); 714 ifr.ifr_metric = ipmuxid; 715 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) 716 fatal("Can't set interface name %s: %m", ifr.ifr_name); 717#endif /* !defined(SOL2) */ 718 719 n_pollfds = 0; 720} 721 722/* 723 * sys_cleanup - restore any system state we modified before exiting: 724 * mark the interface down, delete default route and/or proxy arp entry. 725 * This should call die() because it's called from die(). 726 */ 727void 728sys_cleanup() 729{ 730#if defined(SOL2) 731 struct ifreq ifr; 732#if defined(INET6) 733 struct lifreq lifr; 734#endif /* defined(INET6) */ 735#endif /* defined(SOL2) */ 736 737#if defined(SOL2) && defined(INET6) 738 if (if6_is_up) 739 sif6down(0); 740#endif /* defined(SOL2) && defined(INET6) */ 741 if (if_is_up) 742 sifdown(0); 743 if (default_route_gateway) 744 cifdefaultroute(0, default_route_gateway, default_route_gateway); 745 if (proxy_arp_addr) 746 cifproxyarp(0, proxy_arp_addr); 747#if defined(SOL2) 748 /* 749 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will 750 * unlink and re-link the modules, causing the muxid to change. 751 */ 752 memset(&ifr, 0, sizeof(ifr)); 753 sprintf(ifr.ifr_name, "%s", ifname); 754 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { 755 error("SIOCGIFFLAGS: %m"); 756 return; 757 } 758 759 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) { 760 error("SIOCGIFMUXID: %m"); 761 return; 762 } 763 764 ipmuxid = ifr.ifr_ip_muxid; 765 766 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) { 767 error("Can't I_PUNLINK PPP from IP: %m"); 768 return; 769 } 770#if defined(INET6) 771 /* 772 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will 773 * unlink and re-link the modules, causing the muxid to change. 774 */ 775 memset(&lifr, 0, sizeof(lifr)); 776 sprintf(lifr.lifr_name, "%s", ifname); 777 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) { 778 error("SIOCGLIFFLAGS: %m"); 779 return; 780 } 781 782 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) { 783 error("SIOCGLIFMUXID: %m"); 784 return; 785 } 786 787 ip6muxid = lifr.lifr_ip_muxid; 788 789 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) { 790 error("Can't I_PUNLINK PPP from IP (2): %m"); 791 } 792#endif /* defined(INET6) */ 793#endif /* defined(SOL2) */ 794} 795 796/* 797 * sys_close - Clean up in a child process before execing. 798 */ 799void 800sys_close() 801{ 802 close(ipfd); 803#if defined(INET6) && defined(SOL2) 804 close(ip6fd); 805#endif /* defined(INET6) && defined(SOL2) */ 806 if (pppfd >= 0) 807 close(pppfd); 808} 809 810/* 811 * sys_check_options - check the options that the user specified 812 */ 813int 814sys_check_options() 815{ 816 return 1; 817} 818 819 820/* 821 * ppp_available - check whether the system has any ppp interfaces 822 */ 823int 824ppp_available() 825{ 826 struct stat buf; 827 828 return stat(PPP_DEV_NAME, &buf) >= 0; 829} 830 831/* 832 * any_compressions - see if compression is enabled or not 833 * 834 * In the STREAMS implementation of kernel-portion pppd, 835 * the comp STREAMS module performs the ACFC, PFC, as well 836 * CCP and VJ compressions. However, if the user has explicitly 837 * declare to not enable them from the command line, there is 838 * no point of having the comp module be pushed on the stream. 839 */ 840static int 841any_compressions() 842{ 843 if ((!lcp_wantoptions[0].neg_accompression) && 844 (!lcp_wantoptions[0].neg_pcompression) && 845 (!ccp_protent.enabled_flag) && 846 (!ipcp_wantoptions[0].neg_vj)) { 847 return 0; 848 } 849 return 1; 850} 851 852/* 853 * tty_establish_ppp - Turn the serial port into a ppp interface. 854 */ 855int 856tty_establish_ppp(fd) 857 int fd; 858{ 859 int i; 860 861 /* Pop any existing modules off the tty stream. */ 862 for (i = 0;; ++i) 863 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0 864 || strcmp(tty_modules[i], "ptem") == 0 865 || ioctl(fd, I_POP, 0) < 0) 866 break; 867 tty_nmodules = i; 868 869 /* Push the async hdlc module and the compressor module. */ 870 tty_npushed = 0; 871 872 if(!sync_serial) { 873 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) { 874 error("Couldn't push PPP Async HDLC module: %m"); 875 return -1; 876 } 877 ++tty_npushed; 878 } 879 if (kdebugflag & 4) { 880 i = PPPDBG_LOG + PPPDBG_AHDLC; 881 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); 882 } 883 /* 884 * There's no need to push comp module if we don't intend 885 * to compress anything 886 */ 887 if (any_compressions()) { 888 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0) 889 error("Couldn't push PPP compression module: %m"); 890 else 891 ++tty_npushed; 892 } 893 894 if (kdebugflag & 2) { 895 i = PPPDBG_LOG; 896 if (any_compressions()) 897 i += PPPDBG_COMP; 898 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0); 899 } 900 901 /* Link the serial port under the PPP multiplexor. */ 902 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) { 903 error("Can't link tty to PPP mux: %m"); 904 return -1; 905 } 906 907 return pppfd; 908} 909 910/* 911 * tty_disestablish_ppp - Restore the serial port to normal operation. 912 * It attempts to reconstruct the stream with the previously popped 913 * modules. This shouldn't call die() because it's called from die(). 914 */ 915void 916tty_disestablish_ppp(fd) 917 int fd; 918{ 919 int i; 920 921 if (fdmuxid >= 0) { 922 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) { 923 if (!hungup) 924 error("Can't unlink tty from PPP mux: %m"); 925 } 926 fdmuxid = -1; 927 928 if (!hungup) { 929 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0) 930 --tty_npushed; 931 for (i = tty_nmodules - 1; i >= 0; --i) 932 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0) 933 error("Couldn't restore tty module %s: %m", 934 tty_modules[i]); 935 } 936 if (hungup && default_device && tty_sid > 0) { 937 /* 938 * If we have received a hangup, we need to send a SIGHUP 939 * to the terminal's controlling process. The reason is 940 * that the original stream head for the terminal hasn't 941 * seen the M_HANGUP message (it went up through the ppp 942 * driver to the stream head for our fd to /dev/ppp). 943 */ 944 kill(tty_sid, SIGHUP); 945 } 946 } 947} 948 949/* 950 * Check whether the link seems not to be 8-bit clean. 951 */ 952void 953clean_check() 954{ 955 int x; 956 char *s; 957 958 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0) 959 return; 960 s = NULL; 961 switch (~x) { 962 case RCV_B7_0: 963 s = "bit 7 set to 1"; 964 break; 965 case RCV_B7_1: 966 s = "bit 7 set to 0"; 967 break; 968 case RCV_EVNP: 969 s = "odd parity"; 970 break; 971 case RCV_ODDP: 972 s = "even parity"; 973 break; 974 } 975 if (s != NULL) { 976 warn("Serial link is not 8-bit clean:"); 977 warn("All received characters had %s", s); 978 } 979} 980 981/* 982 * List of valid speeds. 983 */ 984struct speed { 985 int speed_int, speed_val; 986} speeds[] = { 987#ifdef B50 988 { 50, B50 }, 989#endif 990#ifdef B75 991 { 75, B75 }, 992#endif 993#ifdef B110 994 { 110, B110 }, 995#endif 996#ifdef B134 997 { 134, B134 }, 998#endif 999#ifdef B150 1000 { 150, B150 }, 1001#endif 1002#ifdef B200 1003 { 200, B200 }, 1004#endif 1005#ifdef B300 1006 { 300, B300 }, 1007#endif 1008#ifdef B600 1009 { 600, B600 }, 1010#endif 1011#ifdef B1200 1012 { 1200, B1200 }, 1013#endif 1014#ifdef B1800 1015 { 1800, B1800 }, 1016#endif 1017#ifdef B2000 1018 { 2000, B2000 }, 1019#endif 1020#ifdef B2400 1021 { 2400, B2400 }, 1022#endif 1023#ifdef B3600 1024 { 3600, B3600 }, 1025#endif 1026#ifdef B4800 1027 { 4800, B4800 }, 1028#endif 1029#ifdef B7200 1030 { 7200, B7200 }, 1031#endif 1032#ifdef B9600 1033 { 9600, B9600 }, 1034#endif 1035#ifdef B19200 1036 { 19200, B19200 }, 1037#endif 1038#ifdef B38400 1039 { 38400, B38400 }, 1040#endif 1041#ifdef EXTA 1042 { 19200, EXTA }, 1043#endif 1044#ifdef EXTB 1045 { 38400, EXTB }, 1046#endif 1047#ifdef B57600 1048 { 57600, B57600 }, 1049#endif 1050#ifdef B76800 1051 { 76800, B76800 }, 1052#endif 1053#ifdef B115200 1054 { 115200, B115200 }, 1055#endif 1056#ifdef B153600 1057 { 153600, B153600 }, 1058#endif 1059#ifdef B230400 1060 { 230400, B230400 }, 1061#endif 1062#ifdef B307200 1063 { 307200, B307200 }, 1064#endif 1065#ifdef B460800 1066 { 460800, B460800 }, 1067#endif 1068 { 0, 0 } 1069}; 1070 1071/* 1072 * Translate from bits/second to a speed_t. 1073 */ 1074static int 1075translate_speed(bps) 1076 int bps; 1077{ 1078 struct speed *speedp; 1079 1080 if (bps == 0) 1081 return 0; 1082 for (speedp = speeds; speedp->speed_int; speedp++) 1083 if (bps == speedp->speed_int) 1084 return speedp->speed_val; 1085 warn("speed %d not supported", bps); 1086 return 0; 1087} 1088 1089/* 1090 * Translate from a speed_t to bits/second. 1091 */ 1092static int 1093baud_rate_of(speed) 1094 int speed; 1095{ 1096 struct speed *speedp; 1097 1098 if (speed == 0) 1099 return 0; 1100 for (speedp = speeds; speedp->speed_int; speedp++) 1101 if (speed == speedp->speed_val) 1102 return speedp->speed_int; 1103 return 0; 1104} 1105 1106/* 1107 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity, 1108 * at the requested speed, etc. If `local' is true, set CLOCAL 1109 * regardless of whether the modem option was specified. 1110 */ 1111void 1112set_up_tty(fd, local) 1113 int fd, local; 1114{ 1115 int speed; 1116 struct termios tios; 1117#if !defined(CRTSCTS) 1118 struct termiox tiox; 1119#endif 1120 1121 if (!sync_serial && tcgetattr(fd, &tios) < 0) 1122 fatal("tcgetattr: %m"); 1123 1124#ifndef CRTSCTS 1125 termiox_ok = 1; 1126 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) { 1127 termiox_ok = 0; 1128 if (errno != ENOTTY) 1129 error("TCGETX: %m"); 1130 } 1131#endif 1132 1133 if (!restore_term) { 1134 inittermios = tios; 1135#ifndef CRTSCTS 1136 inittermiox = tiox; 1137#endif 1138 if (!sync_serial) 1139 ioctl(fd, TIOCGWINSZ, &wsinfo); 1140 } 1141 1142 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); 1143#ifdef CRTSCTS 1144 if (crtscts > 0) 1145 tios.c_cflag |= CRTSCTS; 1146 else if (crtscts < 0) 1147 tios.c_cflag &= ~CRTSCTS; 1148#else 1149 if (crtscts != 0 && !termiox_ok) { 1150 error("Can't set RTS/CTS flow control"); 1151 } else if (crtscts > 0) { 1152 tiox.x_hflag |= RTSXOFF|CTSXON; 1153 } else if (crtscts < 0) { 1154 tiox.x_hflag &= ~(RTSXOFF|CTSXON); 1155 } 1156#endif 1157 1158 tios.c_cflag |= CS8 | CREAD | HUPCL; 1159 if (local || !modem) 1160 tios.c_cflag |= CLOCAL; 1161 tios.c_iflag = IGNBRK | IGNPAR; 1162 tios.c_oflag = 0; 1163 tios.c_lflag = 0; 1164 tios.c_cc[VMIN] = 1; 1165 tios.c_cc[VTIME] = 0; 1166 1167 if (crtscts == -2) { 1168 tios.c_iflag |= IXON | IXOFF; 1169 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */ 1170 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */ 1171 } 1172 1173 speed = translate_speed(inspeed); 1174 if (speed) { 1175 cfsetospeed(&tios, speed); 1176 cfsetispeed(&tios, speed); 1177 } else { 1178 speed = cfgetospeed(&tios); 1179 /* 1180 * We can't proceed if the serial port speed is 0, 1181 * since that implies that the serial port is disabled. 1182 */ 1183 if ((speed == B0) && !sync_serial) 1184 fatal("Baud rate for %s is 0; need explicit baud rate", devnam); 1185 } 1186 1187 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0) 1188 fatal("tcsetattr: %m"); 1189 1190#ifndef CRTSCTS 1191 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){ 1192 error("TCSETXF: %m"); 1193 } 1194#endif 1195 1196 baud_rate = inspeed = baud_rate_of(speed); 1197 if (!sync_serial) 1198 restore_term = 1; 1199} 1200 1201/* 1202 * restore_tty - restore the terminal to the saved settings. 1203 */ 1204void 1205restore_tty(fd) 1206 int fd; 1207{ 1208 if (restore_term) { 1209 if (!default_device) { 1210 /* 1211 * Turn off echoing, because otherwise we can get into 1212 * a loop with the tty and the modem echoing to each other. 1213 * We presume we are the sole user of this tty device, so 1214 * when we close it, it will revert to its defaults anyway. 1215 */ 1216 inittermios.c_lflag &= ~(ECHO | ECHONL); 1217 } 1218 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0) 1219 if (!hungup && errno != ENXIO) 1220 warn("tcsetattr: %m"); 1221#ifndef CRTSCTS 1222 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){ 1223 if (!hungup && errno != ENXIO) 1224 error("TCSETXF: %m"); 1225 } 1226#endif 1227 if (!sync_serial) 1228 ioctl(fd, TIOCSWINSZ, &wsinfo); 1229 restore_term = 0; 1230 } 1231} 1232 1233/* 1234 * setdtr - control the DTR line on the serial port. 1235 * This is called from die(), so it shouldn't call die(). 1236 */ 1237void 1238setdtr(fd, on) 1239int fd, on; 1240{ 1241 int modembits = TIOCM_DTR; 1242 1243 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits); 1244} 1245 1246/* 1247 * open_loopback - open the device we use for getting packets 1248 * in demand mode. Under Solaris 2, we use our existing fd 1249 * to the ppp driver. 1250 */ 1251int 1252open_ppp_loopback() 1253{ 1254 return pppfd; 1255} 1256 1257/* 1258 * output - Output PPP packet. 1259 */ 1260void 1261output(unit, p, len) 1262 int unit; 1263 u_char *p; 1264 int len; 1265{ 1266 struct strbuf data; 1267 int retries; 1268 struct pollfd pfd; 1269 1270 if (debug) 1271 dbglog("sent %P", p, len); 1272 1273 data.len = len; 1274 data.buf = (caddr_t) p; 1275 retries = 4; 1276 while (putmsg(pppfd, NULL, &data, 0) < 0) { 1277 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) { 1278 if (errno != ENXIO) 1279 error("Couldn't send packet: %m"); 1280 break; 1281 } 1282 pfd.fd = pppfd; 1283 pfd.events = POLLOUT; 1284 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */ 1285 } 1286} 1287 1288 1289/* 1290 * wait_input - wait until there is data available, 1291 * for the length of time specified by *timo (indefinite 1292 * if timo is NULL). 1293 */ 1294void 1295wait_input(timo) 1296 struct timeval *timo; 1297{ 1298 int t; 1299 1300 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000; 1301 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR) 1302 fatal("poll: %m"); 1303} 1304 1305/* 1306 * add_fd - add an fd to the set that wait_input waits for. 1307 */ 1308void add_fd(fd) 1309 int fd; 1310{ 1311 int n; 1312 1313 for (n = 0; n < n_pollfds; ++n) 1314 if (pollfds[n].fd == fd) 1315 return; 1316 if (n_pollfds < MAX_POLLFDS) { 1317 pollfds[n_pollfds].fd = fd; 1318 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP; 1319 ++n_pollfds; 1320 } else 1321 error("Too many inputs!"); 1322} 1323 1324/* 1325 * remove_fd - remove an fd from the set that wait_input waits for. 1326 */ 1327void remove_fd(fd) 1328 int fd; 1329{ 1330 int n; 1331 1332 for (n = 0; n < n_pollfds; ++n) { 1333 if (pollfds[n].fd == fd) { 1334 while (++n < n_pollfds) 1335 pollfds[n-1] = pollfds[n]; 1336 --n_pollfds; 1337 break; 1338 } 1339 } 1340} 1341 1342 1343 1344/* 1345 * read_packet - get a PPP packet from the serial device. 1346 */ 1347int 1348read_packet(buf) 1349 u_char *buf; 1350{ 1351 struct strbuf ctrl, data; 1352 int flags, len; 1353 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64]; 1354 1355 for (;;) { 1356 data.maxlen = PPP_MRU + PPP_HDRLEN; 1357 data.buf = (caddr_t) buf; 1358 ctrl.maxlen = sizeof(ctrlbuf); 1359 ctrl.buf = (caddr_t) ctrlbuf; 1360 flags = 0; 1361 len = getmsg(pppfd, &ctrl, &data, &flags); 1362 if (len < 0) { 1363 if (errno == EAGAIN || errno == EINTR) 1364 return -1; 1365 fatal("Error reading packet: %m"); 1366 } 1367 1368 if (ctrl.len <= 0) 1369 return data.len; 1370 1371 /* 1372 * Got a M_PROTO or M_PCPROTO message. Interpret it 1373 * as a DLPI primitive?? 1374 */ 1375 if (debug) 1376 dbglog("got dlpi prim 0x%x, len=%d", 1377 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len); 1378 1379 } 1380} 1381 1382/* 1383 * get_loop_output - get outgoing packets from the ppp device, 1384 * and detect when we want to bring the real link up. 1385 * Return value is 1 if we need to bring up the link, 0 otherwise. 1386 */ 1387int 1388get_loop_output() 1389{ 1390 int len; 1391 int rv = 0; 1392 1393 while ((len = read_packet(inpacket_buf)) > 0) { 1394 if (loop_frame(inpacket_buf, len)) 1395 rv = 1; 1396 } 1397 return rv; 1398} 1399 1400/* 1401 * netif_set_mtu - set the MTU on the PPP network interface. 1402 */ 1403void 1404netif_set_mtu(unit, mtu) 1405 int unit, mtu; 1406{ 1407 struct ifreq ifr; 1408#if defined(INET6) && defined(SOL2) 1409 struct lifreq lifr; 1410 int fd; 1411#endif /* defined(INET6) && defined(SOL2) */ 1412 1413 memset(&ifr, 0, sizeof(ifr)); 1414 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1415 ifr.ifr_metric = link_mtu; 1416 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) { 1417 error("Couldn't set IP MTU (%s): %m", ifr.ifr_name); 1418 } 1419 1420#if defined(INET6) && defined(SOL2) 1421 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1422 if (fd < 0) 1423 error("Couldn't open IPv6 socket: %m"); 1424 1425 memset(&lifr, 0, sizeof(lifr)); 1426 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1427 lifr.lifr_mtu = link_mtu; 1428 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) { 1429 close(fd); 1430 error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name); 1431 } 1432 close(fd); 1433#endif /* defined(INET6) && defined(SOL2) */ 1434} 1435 1436/* 1437 * tty_send_config - configure the transmit characteristics of 1438 * the ppp interface. 1439 */ 1440void 1441tty_send_config(mtu, asyncmap, pcomp, accomp) 1442 int mtu; 1443 u_int32_t asyncmap; 1444 int pcomp, accomp; 1445{ 1446 int cf[2]; 1447 1448 link_mtu = mtu; 1449 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) { 1450 if (hungup && errno == ENXIO) 1451 return; 1452 error("Couldn't set MTU: %m"); 1453 } 1454 if (fdmuxid >= 0) { 1455 if (!sync_serial) { 1456 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { 1457 error("Couldn't set transmit ACCM: %m"); 1458 } 1459 } 1460 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0); 1461 cf[1] = COMP_PROT | COMP_AC; 1462 if (any_compressions() && 1463 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { 1464 error("Couldn't set prot/AC compression: %m"); 1465 } 1466 } 1467} 1468 1469/* 1470 * ppp_set_xaccm - set the extended transmit ACCM for the interface. 1471 */ 1472void 1473tty_set_xaccm(accm) 1474 ext_accm accm; 1475{ 1476 if (sync_serial) 1477 return; 1478 1479 if (fdmuxid >= 0 1480 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) { 1481 if (!hungup || errno != ENXIO) 1482 warn("Couldn't set extended ACCM: %m"); 1483 } 1484} 1485 1486/* 1487 * ppp_recv_config - configure the receive-side characteristics of 1488 * the ppp interface. 1489 */ 1490void 1491tty_recv_config(mru, asyncmap, pcomp, accomp) 1492 int mru; 1493 u_int32_t asyncmap; 1494 int pcomp, accomp; 1495{ 1496 int cf[2]; 1497 1498 link_mru = mru; 1499 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) { 1500 if (hungup && errno == ENXIO) 1501 return; 1502 error("Couldn't set MRU: %m"); 1503 } 1504 if (fdmuxid >= 0) { 1505 if (!sync_serial) { 1506 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) { 1507 error("Couldn't set receive ACCM: %m"); 1508 } 1509 } 1510 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0); 1511 cf[1] = DECOMP_PROT | DECOMP_AC; 1512 if (any_compressions() && 1513 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { 1514 error("Couldn't set prot/AC decompression: %m"); 1515 } 1516 } 1517} 1518 1519/* 1520 * ccp_test - ask kernel whether a given compression method 1521 * is acceptable for use. 1522 */ 1523int 1524ccp_test(unit, opt_ptr, opt_len, for_transmit) 1525 int unit, opt_len, for_transmit; 1526 u_char *opt_ptr; 1527{ 1528 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP), 1529 opt_ptr, opt_len, 0) >= 0) 1530 return 1; 1531 return (errno == ENOSR)? 0: -1; 1532} 1533 1534/* 1535 * ccp_flags_set - inform kernel about the current state of CCP. 1536 */ 1537void 1538ccp_flags_set(unit, isopen, isup) 1539 int unit, isopen, isup; 1540{ 1541 int cf[2]; 1542 1543 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0); 1544 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR; 1545 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { 1546 if (!hungup || errno != ENXIO) 1547 error("Couldn't set kernel CCP state: %m"); 1548 } 1549} 1550 1551/* 1552 * get_idle_time - return how long the link has been idle. 1553 */ 1554int 1555get_idle_time(u, ip) 1556 int u; 1557 struct ppp_idle *ip; 1558{ 1559 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0; 1560} 1561 1562/* 1563 * get_ppp_stats - return statistics for the link. 1564 */ 1565int 1566get_ppp_stats(u, stats) 1567 int u; 1568 struct pppd_stats *stats; 1569{ 1570 struct ppp_stats s; 1571 1572 if (!sync_serial && 1573 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) { 1574 error("Couldn't get link statistics: %m"); 1575 return 0; 1576 } 1577 stats->bytes_in = s.p.ppp_ibytes; 1578 stats->bytes_out = s.p.ppp_obytes; 1579 return 1; 1580} 1581 1582 1583/* 1584 * ccp_fatal_error - returns 1 if decompression was disabled as a 1585 * result of an error detected after decompression of a packet, 1586 * 0 otherwise. This is necessary because of patent nonsense. 1587 */ 1588int 1589ccp_fatal_error(unit) 1590 int unit; 1591{ 1592 int cf[2]; 1593 1594 cf[0] = cf[1] = 0; 1595 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { 1596 if (errno != ENXIO && errno != EINVAL) 1597 error("Couldn't get compression flags: %m"); 1598 return 0; 1599 } 1600 return cf[0] & CCP_FATALERROR; 1601} 1602 1603/* 1604 * sifvjcomp - config tcp header compression 1605 */ 1606int 1607sifvjcomp(u, vjcomp, xcidcomp, xmaxcid) 1608 int u, vjcomp, xcidcomp, xmaxcid; 1609{ 1610 int cf[2]; 1611 char maxcid[2]; 1612 1613 if (vjcomp) { 1614 maxcid[0] = xcidcomp; 1615 maxcid[1] = 15; 1616 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) { 1617 error("Couldn't initialize VJ compression: %m"); 1618 } 1619 } 1620 1621 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) 1622 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0); 1623 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID; 1624 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) { 1625 if (vjcomp) 1626 error("Couldn't enable VJ compression: %m"); 1627 } 1628 1629 return 1; 1630} 1631 1632/* 1633 * sifup - Config the interface up and enable IP packets to pass. 1634 */ 1635int 1636sifup(u) 1637 int u; 1638{ 1639 struct ifreq ifr; 1640 1641 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1642 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { 1643 error("Couldn't mark interface up (get): %m"); 1644 return 0; 1645 } 1646 ifr.ifr_flags |= IFF_UP; 1647 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { 1648 error("Couldn't mark interface up (set): %m"); 1649 return 0; 1650 } 1651 if_is_up = 1; 1652 return 1; 1653} 1654 1655/* 1656 * sifdown - Config the interface down and disable IP. 1657 */ 1658int 1659sifdown(u) 1660 int u; 1661{ 1662 struct ifreq ifr; 1663 1664 if (ipmuxid < 0) 1665 return 1; 1666 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1667 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) { 1668 error("Couldn't mark interface down (get): %m"); 1669 return 0; 1670 } 1671 ifr.ifr_flags &= ~IFF_UP; 1672 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { 1673 error("Couldn't mark interface down (set): %m"); 1674 return 0; 1675 } 1676 if_is_up = 0; 1677 return 1; 1678} 1679 1680/* 1681 * sifnpmode - Set the mode for handling packets for a given NP. 1682 */ 1683int 1684sifnpmode(u, proto, mode) 1685 int u; 1686 int proto; 1687 enum NPmode mode; 1688{ 1689 int npi[2]; 1690 1691 npi[0] = proto; 1692 npi[1] = (int) mode; 1693 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) { 1694 error("ioctl(set NP %d mode to %d): %m", proto, mode); 1695 return 0; 1696 } 1697 return 1; 1698} 1699 1700#if defined(SOL2) && defined(INET6) 1701/* 1702 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass. 1703 */ 1704int 1705sif6up(u) 1706 int u; 1707{ 1708 struct lifreq lifr; 1709 int fd; 1710 1711 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1712 if (fd < 0) { 1713 return 0; 1714 } 1715 1716 memset(&lifr, 0, sizeof(lifr)); 1717 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1718 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { 1719 close(fd); 1720 return 0; 1721 } 1722 1723 lifr.lifr_flags |= IFF_UP; 1724 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1725 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) { 1726 close(fd); 1727 return 0; 1728 } 1729 1730 if6_is_up = 1; 1731 close(fd); 1732 return 1; 1733} 1734 1735/* 1736 * sifdown - Config the IPv6 interface down and disable IPv6. 1737 */ 1738int 1739sif6down(u) 1740 int u; 1741{ 1742 struct lifreq lifr; 1743 int fd; 1744 1745 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1746 if (fd < 0) 1747 return 0; 1748 1749 memset(&lifr, 0, sizeof(lifr)); 1750 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1751 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { 1752 close(fd); 1753 return 0; 1754 } 1755 1756 lifr.lifr_flags &= ~IFF_UP; 1757 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1758 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) { 1759 close(fd); 1760 return 0; 1761 } 1762 1763 if6_is_up = 0; 1764 close(fd); 1765 return 1; 1766} 1767 1768/* 1769 * sif6addr - Config the interface with an IPv6 link-local address 1770 */ 1771int 1772sif6addr(u, o, h) 1773 int u; 1774 eui64_t o, h; 1775{ 1776 struct lifreq lifr; 1777 struct sockaddr_storage laddr; 1778 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr; 1779 int fd; 1780 1781 fd = socket(AF_INET6, SOCK_DGRAM, 0); 1782 if (fd < 0) 1783 return 0; 1784 1785 memset(&lifr, 0, sizeof(lifr)); 1786 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1787 1788 /* 1789 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with 1790 * zero values, hence the interface token came to be zero too, 1791 * and without this, in.ndpd will complain 1792 */ 1793 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o); 1794 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) { 1795 close(fd); 1796 return 0; 1797 } 1798 1799 /* 1800 * Set the interface address and destination address 1801 */ 1802 IN6_LLADDR_FROM_EUI64(lifr, sin6, o); 1803 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) { 1804 close(fd); 1805 return 0; 1806 } 1807 1808 memset(&lifr, 0, sizeof(lifr)); 1809 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name)); 1810 IN6_LLADDR_FROM_EUI64(lifr, sin6, h); 1811 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) { 1812 close(fd); 1813 return 0; 1814 } 1815 1816 return 1; 1817} 1818 1819/* 1820 * cif6addr - Remove the IPv6 address from interface 1821 */ 1822int 1823cif6addr(u, o, h) 1824 int u; 1825 eui64_t o, h; 1826{ 1827 return 1; 1828} 1829 1830#endif /* defined(SOL2) && defined(INET6) */ 1831 1832 1833#define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr) 1834 1835/* 1836 * sifaddr - Config the interface IP addresses and netmask. 1837 */ 1838int 1839sifaddr(u, o, h, m) 1840 int u; 1841 u_int32_t o, h, m; 1842{ 1843 struct ifreq ifr; 1844 int ret = 1; 1845 1846 memset(&ifr, 0, sizeof(ifr)); 1847 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); 1848 ifr.ifr_addr.sa_family = AF_INET; 1849 INET_ADDR(ifr.ifr_addr) = m; 1850 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) { 1851 error("Couldn't set IP netmask: %m"); 1852 ret = 0; 1853 } 1854 ifr.ifr_addr.sa_family = AF_INET; 1855 INET_ADDR(ifr.ifr_addr) = o; 1856 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) { 1857 error("Couldn't set local IP address: %m"); 1858 ret = 0; 1859 } 1860 1861 /* 1862 * On some systems, we have to explicitly set the point-to-point 1863 * flag bit before we can set a destination address. 1864 */ 1865 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0 1866 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) { 1867 ifr.ifr_flags |= IFF_POINTOPOINT; 1868 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) { 1869 error("Couldn't mark interface pt-to-pt: %m"); 1870 ret = 0; 1871 } 1872 } 1873 ifr.ifr_dstaddr.sa_family = AF_INET; 1874 INET_ADDR(ifr.ifr_dstaddr) = h; 1875 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) { 1876 error("Couldn't set remote IP address: %m"); 1877 ret = 0; 1878 } 1879 1880 remote_addr = h; 1881 return ret; 1882} 1883 1884/* 1885 * cifaddr - Clear the interface IP addresses, and delete routes 1886 * through the interface if possible. 1887 */ 1888int 1889cifaddr(u, o, h) 1890 int u; 1891 u_int32_t o, h; 1892{ 1893#if defined(__USLC__) /* was: #if 0 */ 1894 cifroute(unit, ouraddr, hisaddr); 1895 if (ipmuxid >= 0) { 1896 notice("Removing ppp interface unit"); 1897 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) { 1898 error("Can't remove ppp interface unit: %m"); 1899 return 0; 1900 } 1901 ipmuxid = -1; 1902 } 1903#endif 1904 remote_addr = 0; 1905 return 1; 1906} 1907 1908/* 1909 * sifdefaultroute - assign a default route through the address given. 1910 */ 1911int 1912sifdefaultroute(u, l, g) 1913 int u; 1914 u_int32_t l, g; 1915{ 1916 struct rtentry rt; 1917 1918#if defined(__USLC__) 1919 g = l; /* use the local address as gateway */ 1920#endif 1921 memset(&rt, 0, sizeof(rt)); 1922 rt.rt_dst.sa_family = AF_INET; 1923 INET_ADDR(rt.rt_dst) = 0; 1924 rt.rt_gateway.sa_family = AF_INET; 1925 INET_ADDR(rt.rt_gateway) = g; 1926 rt.rt_flags = RTF_GATEWAY; 1927 1928 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) { 1929 error("Can't add default route: %m"); 1930 return 0; 1931 } 1932 1933 default_route_gateway = g; 1934 return 1; 1935} 1936 1937/* 1938 * cifdefaultroute - delete a default route through the address given. 1939 */ 1940int 1941cifdefaultroute(u, l, g) 1942 int u; 1943 u_int32_t l, g; 1944{ 1945 struct rtentry rt; 1946 1947#if defined(__USLC__) 1948 g = l; /* use the local address as gateway */ 1949#endif 1950 memset(&rt, 0, sizeof(rt)); 1951 rt.rt_dst.sa_family = AF_INET; 1952 INET_ADDR(rt.rt_dst) = 0; 1953 rt.rt_gateway.sa_family = AF_INET; 1954 INET_ADDR(rt.rt_gateway) = g; 1955 rt.rt_flags = RTF_GATEWAY; 1956 1957 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { 1958 error("Can't delete default route: %m"); 1959 return 0; 1960 } 1961 1962 default_route_gateway = 0; 1963 return 1; 1964} 1965 1966/* 1967 * sifproxyarp - Make a proxy ARP entry for the peer. 1968 */ 1969int 1970sifproxyarp(unit, hisaddr) 1971 int unit; 1972 u_int32_t hisaddr; 1973{ 1974 struct arpreq arpreq; 1975 1976 memset(&arpreq, 0, sizeof(arpreq)); 1977 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) 1978 return 0; 1979 1980 arpreq.arp_pa.sa_family = AF_INET; 1981 INET_ADDR(arpreq.arp_pa) = hisaddr; 1982 arpreq.arp_flags = ATF_PERM | ATF_PUBL; 1983 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) { 1984 error("Couldn't set proxy ARP entry: %m"); 1985 return 0; 1986 } 1987 1988 proxy_arp_addr = hisaddr; 1989 return 1; 1990} 1991 1992/* 1993 * cifproxyarp - Delete the proxy ARP entry for the peer. 1994 */ 1995int 1996cifproxyarp(unit, hisaddr) 1997 int unit; 1998 u_int32_t hisaddr; 1999{ 2000 struct arpreq arpreq; 2001 2002 memset(&arpreq, 0, sizeof(arpreq)); 2003 arpreq.arp_pa.sa_family = AF_INET; 2004 INET_ADDR(arpreq.arp_pa) = hisaddr; 2005 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) { 2006 error("Couldn't delete proxy ARP entry: %m"); 2007 return 0; 2008 } 2009 2010 proxy_arp_addr = 0; 2011 return 1; 2012} 2013 2014/* 2015 * get_ether_addr - get the hardware address of an interface on the 2016 * the same subnet as ipaddr. 2017 */ 2018#define MAX_IFS 32 2019 2020static int 2021get_ether_addr(ipaddr, hwaddr) 2022 u_int32_t ipaddr; 2023 struct sockaddr *hwaddr; 2024{ 2025 struct ifreq *ifr, *ifend, ifreq; 2026 int nif; 2027 struct ifconf ifc; 2028 u_int32_t ina, mask; 2029 2030 /* 2031 * Scan through the system's network interfaces. 2032 */ 2033#ifdef SIOCGIFNUM 2034 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) 2035#endif 2036 nif = MAX_IFS; 2037 ifc.ifc_len = nif * sizeof(struct ifreq); 2038 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len); 2039 if (ifc.ifc_buf == 0) 2040 return 0; 2041 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { 2042 warn("Couldn't get system interface list: %m"); 2043 free(ifc.ifc_buf); 2044 return 0; 2045 } 2046 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); 2047 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { 2048 if (ifr->ifr_addr.sa_family != AF_INET) 2049 continue; 2050 /* 2051 * Check that the interface is up, and not point-to-point or loopback. 2052 */ 2053 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); 2054 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0) 2055 continue; 2056 if ((ifreq.ifr_flags & 2057 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP)) 2058 != (IFF_UP|IFF_BROADCAST)) 2059 continue; 2060 /* 2061 * Get its netmask and check that it's on the right subnet. 2062 */ 2063 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0) 2064 continue; 2065 ina = INET_ADDR(ifr->ifr_addr); 2066 mask = INET_ADDR(ifreq.ifr_addr); 2067 if ((ipaddr & mask) == (ina & mask)) 2068 break; 2069 } 2070 2071 if (ifr >= ifend) { 2072 warn("No suitable interface found for proxy ARP"); 2073 free(ifc.ifc_buf); 2074 return 0; 2075 } 2076 2077 info("found interface %s for proxy ARP", ifr->ifr_name); 2078 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) { 2079 error("Couldn't get hardware address for %s", ifr->ifr_name); 2080 free(ifc.ifc_buf); 2081 return 0; 2082 } 2083 2084 free(ifc.ifc_buf); 2085 return 1; 2086} 2087 2088/* 2089 * get_hw_addr_dlpi - obtain the hardware address using DLPI 2090 */ 2091static int 2092get_hw_addr_dlpi(name, hwaddr) 2093 char *name; 2094 struct sockaddr *hwaddr; 2095{ 2096 char *p, *q; 2097 int unit, iffd, adrlen; 2098 unsigned char *adrp; 2099 char ifdev[24]; 2100 struct { 2101 union DL_primitives prim; 2102 char space[64]; 2103 } reply; 2104 2105 /* 2106 * We have to open the device and ask it for its hardware address. 2107 * First split apart the device name and unit. 2108 */ 2109 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name); 2110 for (q = ifdev + strlen(ifdev); --q >= ifdev; ) 2111 if (!isdigit(*q)) 2112 break; 2113 unit = atoi(q+1); 2114 q[1] = 0; 2115 2116 /* 2117 * Open the device and do a DLPI attach and phys_addr_req. 2118 */ 2119 iffd = open(ifdev, O_RDWR); 2120 if (iffd < 0) { 2121 error("Can't open %s: %m", ifdev); 2122 return 0; 2123 } 2124 if (dlpi_attach(iffd, unit) < 0 2125 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0 2126 || dlpi_info_req(iffd) < 0 2127 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) { 2128 close(iffd); 2129 return 0; 2130 } 2131 2132 adrlen = reply.prim.info_ack.dl_addr_length; 2133 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset; 2134 2135#if DL_CURRENT_VERSION >= 2 2136 if (reply.prim.info_ack.dl_sap_length < 0) 2137 adrlen += reply.prim.info_ack.dl_sap_length; 2138 else 2139 adrp += reply.prim.info_ack.dl_sap_length; 2140#endif 2141 2142 hwaddr->sa_family = AF_UNSPEC; 2143 memcpy(hwaddr->sa_data, adrp, adrlen); 2144 2145 return 1; 2146} 2147/* 2148 * get_hw_addr - obtain the hardware address for a named interface. 2149 */ 2150static int 2151get_hw_addr(name, ina, hwaddr) 2152 char *name; 2153 u_int32_t ina; 2154 struct sockaddr *hwaddr; 2155{ 2156 /* New way - get the address by doing an arp request. */ 2157 int s; 2158 struct arpreq req; 2159 2160 s = socket(AF_INET, SOCK_DGRAM, 0); 2161 if (s < 0) 2162 return 0; 2163 memset(&req, 0, sizeof(req)); 2164 req.arp_pa.sa_family = AF_INET; 2165 INET_ADDR(req.arp_pa) = ina; 2166 if (ioctl(s, SIOCGARP, &req) < 0) { 2167 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina)); 2168 return 0; 2169 } 2170 *hwaddr = req.arp_ha; 2171 hwaddr->sa_family = AF_UNSPEC; 2172 2173 return 1; 2174} 2175 2176static int 2177dlpi_attach(fd, ppa) 2178 int fd, ppa; 2179{ 2180 dl_attach_req_t req; 2181 struct strbuf buf; 2182 2183 req.dl_primitive = DL_ATTACH_REQ; 2184 req.dl_ppa = ppa; 2185 buf.len = sizeof(req); 2186 buf.buf = (void *) &req; 2187 return putmsg(fd, &buf, NULL, RS_HIPRI); 2188} 2189 2190static int 2191dlpi_info_req(fd) 2192 int fd; 2193{ 2194 dl_info_req_t req; 2195 struct strbuf buf; 2196 2197 req.dl_primitive = DL_INFO_REQ; 2198 buf.len = sizeof(req); 2199 buf.buf = (void *) &req; 2200 return putmsg(fd, &buf, NULL, RS_HIPRI); 2201} 2202 2203static int 2204dlpi_get_reply(fd, reply, expected_prim, maxlen) 2205 union DL_primitives *reply; 2206 int fd, expected_prim, maxlen; 2207{ 2208 struct strbuf buf; 2209 int flags, n; 2210 struct pollfd pfd; 2211 2212 /* 2213 * Use poll to wait for a message with a timeout. 2214 */ 2215 pfd.fd = fd; 2216 pfd.events = POLLIN | POLLPRI; 2217 do { 2218 n = poll(&pfd, 1, 1000); 2219 } while (n == -1 && errno == EINTR); 2220 if (n <= 0) 2221 return -1; 2222 2223 /* 2224 * Get the reply. 2225 */ 2226 buf.maxlen = maxlen; 2227 buf.buf = (void *) reply; 2228 flags = 0; 2229 if (getmsg(fd, &buf, NULL, &flags) < 0) 2230 return -1; 2231 2232 if (buf.len < sizeof(ulong)) { 2233 if (debug) 2234 dbglog("dlpi response short (len=%d)\n", buf.len); 2235 return -1; 2236 } 2237 2238 if (reply->dl_primitive == expected_prim) 2239 return 0; 2240 2241 if (debug) { 2242 if (reply->dl_primitive == DL_ERROR_ACK) { 2243 dbglog("dlpi error %d (unix errno %d) for prim %x\n", 2244 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno, 2245 reply->error_ack.dl_error_primitive); 2246 } else { 2247 dbglog("dlpi unexpected response prim %x\n", 2248 reply->dl_primitive); 2249 } 2250 } 2251 2252 return -1; 2253} 2254 2255/* 2256 * Return user specified netmask, modified by any mask we might determine 2257 * for address `addr' (in network byte order). 2258 * Here we scan through the system's list of interfaces, looking for 2259 * any non-point-to-point interfaces which might appear to be on the same 2260 * network as `addr'. If we find any, we OR in their netmask to the 2261 * user-specified netmask. 2262 */ 2263u_int32_t 2264GetMask(addr) 2265 u_int32_t addr; 2266{ 2267 u_int32_t mask, nmask, ina; 2268 struct ifreq *ifr, *ifend, ifreq; 2269 int nif; 2270 struct ifconf ifc; 2271 2272 addr = ntohl(addr); 2273 if (IN_CLASSA(addr)) /* determine network mask for address class */ 2274 nmask = IN_CLASSA_NET; 2275 else if (IN_CLASSB(addr)) 2276 nmask = IN_CLASSB_NET; 2277 else 2278 nmask = IN_CLASSC_NET; 2279 /* class D nets are disallowed by bad_ip_adrs */ 2280 mask = netmask | htonl(nmask); 2281 2282 /* 2283 * Scan through the system's network interfaces. 2284 */ 2285#ifdef SIOCGIFNUM 2286 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0) 2287#endif 2288 nif = MAX_IFS; 2289 ifc.ifc_len = nif * sizeof(struct ifreq); 2290 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len); 2291 if (ifc.ifc_buf == 0) 2292 return mask; 2293 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) { 2294 warn("Couldn't get system interface list: %m"); 2295 free(ifc.ifc_buf); 2296 return mask; 2297 } 2298 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len); 2299 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) { 2300 /* 2301 * Check the interface's internet address. 2302 */ 2303 if (ifr->ifr_addr.sa_family != AF_INET) 2304 continue; 2305 ina = INET_ADDR(ifr->ifr_addr); 2306 if ((ntohl(ina) & nmask) != (addr & nmask)) 2307 continue; 2308 /* 2309 * Check that the interface is up, and not point-to-point or loopback. 2310 */ 2311 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); 2312 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0) 2313 continue; 2314 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) 2315 != IFF_UP) 2316 continue; 2317 /* 2318 * Get its netmask and OR it into our mask. 2319 */ 2320 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0) 2321 continue; 2322 mask |= INET_ADDR(ifreq.ifr_addr); 2323 } 2324 2325 free(ifc.ifc_buf); 2326 return mask; 2327} 2328 2329/* 2330 * logwtmp - write an accounting record to the /var/adm/wtmp file. 2331 */ 2332void 2333logwtmp(line, name, host) 2334 const char *line, *name, *host; 2335{ 2336 static struct utmpx utmpx; 2337 2338 if (name[0] != 0) { 2339 /* logging in */ 2340 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user)); 2341 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id)); 2342 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line)); 2343 utmpx.ut_pid = getpid(); 2344 utmpx.ut_type = USER_PROCESS; 2345 } else { 2346 utmpx.ut_type = DEAD_PROCESS; 2347 } 2348 gettimeofday(&utmpx.ut_tv, NULL); 2349 updwtmpx("/var/adm/wtmpx", &utmpx); 2350} 2351 2352/* 2353 * get_host_seed - return the serial number of this machine. 2354 */ 2355int 2356get_host_seed() 2357{ 2358 char buf[32]; 2359 2360 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) { 2361 error("sysinfo: %m"); 2362 return 0; 2363 } 2364 return (int) strtoul(buf, NULL, 16); 2365} 2366 2367static int 2368strioctl(fd, cmd, ptr, ilen, olen) 2369 int fd, cmd, ilen, olen; 2370 void *ptr; 2371{ 2372 struct strioctl str; 2373 2374 str.ic_cmd = cmd; 2375 str.ic_timout = 0; 2376 str.ic_len = ilen; 2377 str.ic_dp = ptr; 2378 if (ioctl(fd, I_STR, &str) == -1) 2379 return -1; 2380 if (str.ic_len != olen) 2381 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n", 2382 olen, str.ic_len, cmd); 2383 return 0; 2384} 2385 2386 2387/* 2388 * cifroute - delete a route through the addresses given. 2389 */ 2390int 2391cifroute(u, our, his) 2392 int u; 2393 u_int32_t our, his; 2394{ 2395 struct rtentry rt; 2396 2397 memset(&rt, 0, sizeof(rt)); 2398 rt.rt_dst.sa_family = AF_INET; 2399 INET_ADDR(rt.rt_dst) = his; 2400 rt.rt_gateway.sa_family = AF_INET; 2401 INET_ADDR(rt.rt_gateway) = our; 2402 rt.rt_flags = RTF_HOST; 2403 2404 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) { 2405 error("Can't delete route: %m"); 2406 return 0; 2407 } 2408 2409 return 1; 2410} 2411 2412/* 2413 * have_route_to - determine if the system has a route to the specified 2414 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell. 2415 * `addr' is in network byte order. 2416 * For demand mode to work properly, we have to ignore routes 2417 * through our own interface. 2418 */ 2419#ifndef T_CURRENT /* needed for Solaris 2.5 */ 2420#define T_CURRENT MI_T_CURRENT 2421#endif 2422 2423int 2424have_route_to(addr) 2425 u_int32_t addr; 2426{ 2427#ifdef SOL2 2428 int fd, r, flags, i; 2429 struct { 2430 struct T_optmgmt_req req; 2431 struct opthdr hdr; 2432 } req; 2433 union { 2434 struct T_optmgmt_ack ack; 2435 unsigned char space[64]; 2436 } ack; 2437 struct opthdr *rh; 2438 struct strbuf cbuf, dbuf; 2439 int nroutes; 2440 mib2_ipRouteEntry_t routes[8]; 2441 mib2_ipRouteEntry_t *rp; 2442 2443 fd = open(mux_dev_name, O_RDWR); 2444 if (fd < 0) { 2445 warn("have_route_to: couldn't open %s: %m", mux_dev_name); 2446 return -1; 2447 } 2448 2449 req.req.PRIM_type = T_OPTMGMT_REQ; 2450 req.req.OPT_offset = (char *) &req.hdr - (char *) &req; 2451 req.req.OPT_length = sizeof(req.hdr); 2452 req.req.MGMT_flags = T_CURRENT; 2453 2454 req.hdr.level = MIB2_IP; 2455 req.hdr.name = 0; 2456 req.hdr.len = 0; 2457 2458 cbuf.buf = (char *) &req; 2459 cbuf.len = sizeof(req); 2460 2461 if (putmsg(fd, &cbuf, NULL, 0) == -1) { 2462 warn("have_route_to: putmsg: %m"); 2463 close(fd); 2464 return -1; 2465 } 2466 2467 for (;;) { 2468 cbuf.buf = (char *) &ack; 2469 cbuf.maxlen = sizeof(ack); 2470 dbuf.buf = (char *) routes; 2471 dbuf.maxlen = sizeof(routes); 2472 flags = 0; 2473 r = getmsg(fd, &cbuf, &dbuf, &flags); 2474 if (r == -1) { 2475 warn("have_route_to: getmsg: %m"); 2476 close(fd); 2477 return -1; 2478 } 2479 2480 if (cbuf.len < sizeof(struct T_optmgmt_ack) 2481 || ack.ack.PRIM_type != T_OPTMGMT_ACK 2482 || ack.ack.MGMT_flags != T_SUCCESS 2483 || ack.ack.OPT_length < sizeof(struct opthdr)) { 2484 dbglog("have_route_to: bad message len=%d prim=%d", 2485 cbuf.len, ack.ack.PRIM_type); 2486 close(fd); 2487 return -1; 2488 } 2489 2490 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset); 2491 if (rh->level == 0 && rh->name == 0) 2492 break; 2493 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) { 2494 while (r == MOREDATA) 2495 r = getmsg(fd, NULL, &dbuf, &flags); 2496 continue; 2497 } 2498 2499 for (;;) { 2500 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t); 2501 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) { 2502 if (rp->ipRouteMask != ~0) { 2503 dbglog("have_route_to: dest=%x gw=%x mask=%x\n", 2504 rp->ipRouteDest, rp->ipRouteNextHop, 2505 rp->ipRouteMask); 2506 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0 2507 && rp->ipRouteNextHop != remote_addr) 2508 return 1; 2509 } 2510 } 2511 if (r == 0) 2512 break; 2513 r = getmsg(fd, NULL, &dbuf, &flags); 2514 } 2515 } 2516 close(fd); 2517 return 0; 2518#else 2519 return -1; 2520#endif /* SOL2 */ 2521} 2522 2523/* 2524 * get_pty - get a pty master/slave pair and chown the slave side to 2525 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space. 2526 */ 2527int 2528get_pty(master_fdp, slave_fdp, slave_name, uid) 2529 int *master_fdp; 2530 int *slave_fdp; 2531 char *slave_name; 2532 int uid; 2533{ 2534 int mfd, sfd; 2535 char *pty_name; 2536 struct termios tios; 2537 2538 mfd = open("/dev/ptmx", O_RDWR); 2539 if (mfd < 0) { 2540 error("Couldn't open pty master: %m"); 2541 return 0; 2542 } 2543 2544 pty_name = ptsname(mfd); 2545 if (pty_name == NULL) { 2546 error("Couldn't get name of pty slave"); 2547 close(mfd); 2548 return 0; 2549 } 2550 if (chown(pty_name, uid, -1) < 0) 2551 warn("Couldn't change owner of pty slave: %m"); 2552 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0) 2553 warn("Couldn't change permissions on pty slave: %m"); 2554 if (unlockpt(mfd) < 0) 2555 warn("Couldn't unlock pty slave: %m"); 2556 2557 sfd = open(pty_name, O_RDWR); 2558 if (sfd < 0) { 2559 error("Couldn't open pty slave %s: %m", pty_name); 2560 close(mfd); 2561 return 0; 2562 } 2563 if (ioctl(sfd, I_PUSH, "ptem") < 0) 2564 warn("Couldn't push ptem module on pty slave: %m"); 2565 2566 dbglog("Using %s", pty_name); 2567 strlcpy(slave_name, pty_name, MAXPATHLEN); 2568 *master_fdp = mfd; 2569 *slave_fdp = sfd; 2570 2571 return 1; 2572} 2573